Watch List notes:

The Roman Empire
In the name of Nero and Drusus caesares

Dupondius 39-40, Æ 16.32 g. NERO ET DRVSVS CAESARES Nero and Drusus Caesar riding r., cloaks flying. Rev. C CAESAR DIVI AVG PRON AVG P M TR P III P P around S C. C –. BMC Gaius p. 156 note ‡. RIC Gaius 42 var. (POT in error?). CBN –.
Dark green patina with some areas of porosity, otherwise very fine

Illustrated on www.romancoins.info, section imagines imperatorum
Portraits of Nero and Drusus, older sons of Germanicus, are known in marble and on provincial coins belonging to Tiberius' and Caligula's reigns. This is the only issue for the mint of Roma depicting them. Very rare with TR P III. AMP.